Same thing happened to me in a pre-season friendly. It was arranged that I’d come on at halftime. Whoever played best was in the team for the first league fixture that weekend. We were losing 2-0 and my “ rival “ hadn’t done much. So I’d come on as a sub at half time. We kicked off and the lads passed the ball back to me in the old right half position. The pass was under played and as I got to the ball and tried to beat the on rushing opponents striker he caught my trailing leg. You could hear the crack like a pistol shot. The lad I subbed had to get out of the shower and come back on !
I was never the same player after that.